Link command menu items to specific page layout (#19706)

- Add a `pageLayoutId` foreign key to `CommandMenuItem`, allowing
command menu items to be scoped to a specific page layout instead of
being globally available
- Filter command menu items by the current page layout on the frontend.
Items with a `pageLayoutId` only appear when viewing that layout, while
items without one remain globally visible
- Create an effect to track the current page layout ID
- Include a seed example: a "Show Notification" command pinned to the
Star history standalone page layout

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-client-sdk/src/metadata/generated/schema.graphql

@@ -2651,6 +2651,7 @@ type CommandMenuItem {
   hotKeys: [String!]
   conditionalAvailabilityExpression: String
   availabilityObjectMetadataId: UUID
+  pageLayoutId: UUID
   applicationId: UUID
   createdAt: DateTime!
   updatedAt: DateTime!
@@ -4183,6 +4184,7 @@ input CreateCommandMenuItemInput {
   conditionalAvailabilityExpression: String
   availabilityObjectMetadataId: UUID
   payload: JSON
+  pageLayoutId: UUID
 }
 
 input UpdateCommandMenuItemInput {
@@ -4196,6 +4198,7 @@ input UpdateCommandMenuItemInput {
   availabilityObjectMetadataId: UUID
   engineComponentKey: EngineComponentKey
   hotKeys: [String!]
+  pageLayoutId: UUID
 }
 
 input CreateFrontComponentInput {